fix(sztp): document manual instructions

Signed-off-by: Boris Glimcher <36732377+glimchb@users.noreply.github.com>

lab/sztp.md

@@ -0,0 +1,69 @@
+# Secure Zero Touch Provisioning (sZTP)
+
+Took from <https://github.com/opiproject/sztp>
+
+## Run on Management server
+
+Start Bootstrap and Web servers from [compose](./docker-compose.yml):
+
+```bash
+docker compose up -d
+```
+
+Add SZTP options to your DHCP server, [example](https://github.com/opiproject/sztp/blob/main/dhcp/dhcpd.conf.template):
+
+```bash
+$ grep sztp /etc/dhcp/dhcpd.conf
+option sztp-redirect-urls code 143  = text;
+option sztp-redirect-urls \"https://bootstrap:8080/restconf/operations/ietf-sztp-bootstrap-server:get-bootstrapping-data\";
+```
+
+Extract certificates from Bootstrap server:
+
+```bash
+docker-compose cp bootstrap:/opi.pem /tmp/opi.pem
+docker-compose cp bootstrap:/tmp/sztpd-simulator/pki/client/end-entity/my_cert.pem /tmp/opi_cert.pem
+docker-compose cp bootstrap:/tmp/sztpd-simulator/pki/client/end-entity/private_key.pem /tmp/opi_private_key.pem
+```
+
+Copy extracted certificates to DPUs:
+
+```bash
+scp /tmp/opi*.pem root@172.22.3.2:/mnt/
+```
+
+## Run on DPUs
+
+Add sztp option to the dhcp client, [example](https://github.com/opiproject/sztp/blob/main/dhcp/dhclient.conf):
+
+```bash
+root@bf2:~# grep sztp /etc/dhcp/dhclient.conf
+option sztp-redirect-urls code 143  = text;
+request subnet-mask, broadcast-address, time-offset, routers, sztp-redirect-urls,
+```
+
+Make sure lease file received the correct option:
+
+```bash
+DHCLIENT_LEASE_FILE=/var/lib/NetworkManager/dhclient-aa93b667-6aac-3804-91e9-4958e07fdb2f-oob_net0.lease
+root@bf2:~# grep sztp ${DHCLIENT_LEASE_FILE}
+  option sztp-redirect-urls "https://bootstrap:8080/restconf/operations/ietf-sztp-bootstrap-server:get-bootstrapping-data";
+```
+
+Add static hostname resolution per certificate dns limitation:
+
+```bash
+# add hostnames per certificate dns generation
+root@bf2:~# grep bootstrap /etc/hosts
+172.22.0.1      bootstrap web
+```
+
+Finally run SZTP agent/client:
+
+```bash
+DHCLIENT_LEASE_FILE=/var/lib/NetworkManager/dhclient-aa93b667-6aac-3804-91e9-4958e07fdb2f-oob_net0.lease
+docker run --rm -it --network=host -v /mnt/:/mnt \
+  --mount type=bind,source=${DHCLIENT_LEASE_FILE},target=/var/lib/dhclient/dhclient.leases \
+  ghcr.io/opiproject/opi-sztp-client:main \
+  /opi-sztp-agent daemon --bootstrap-trust-anchor-cert /mnt/opi.pem --device-end-entity-cert /mnt/opi_cert.pem --device-private-key /mnt/opi_private_key.pem
+```